Features Works with a Pi2/Pi3 or Pi4 (USB connector positions swapped) Uses the Cmedia CM119B USB audio IC Uses a NiceRF SA818 UHF or VHF embedded radio module 500 to 1000(default) milliwatts RF output power Small, portable with self contained radio and antenna Radio settings changed using a program running on the Raspberry Pi Required Hardware: 1.A fully assembled SHARI Pi3U, Pi3V, Pi4U or Pi4V. 2.A Raspberry Pi 2, Pi 3 or Pi4 . The Pi2 or Pi3 is normally used with the SHARI Pi3(U) ,while the Pi4 is normally used with the SHARI Pi4(U) 3.A case for the Raspberry Pi. A metal case is preferred but if you want to use a WiFi connection instead of a wired network connection then a plastic case may be required to obtain adequate range. 4.A micro SD card – 16GB or larger, Class 10 or better is recommended. 5.A power supply for the Pi-This should be a power supply intended for the version of the Raspberry Pi. These supplies typically provide 5.1 to 5.2 VDC to the Pi. Current requirements vary with version. Numerous problems with Allstar Nodes have been traced to inadequate power supplies. SHARI Allstar Node Setup and Configuration Guide (In short version) 1．Create an Account with Allstar 2．Create a Server and Request a Node number 3．Software 4．Configuring Allstar 5．Configuring SimpleUSB-Tune-Menu for SHARI 6．Connecting and Configuring SHARI 7．Setting Receive and Transmit Voice Levels 8．Testing DTMF Decoding 9．Enabling the COS LED